$26+12x+x^2$
$x2+5x+5\le0$
$\sqrt{2a}+\sqrt{3b}$
$1.\:\:\:\:\:12x\:-\:9$
$\frac{1\cdot\sin\left(x\right)}{2}$
$\int_1^t\frac{1}{x}-2x+1x\:dx$
$\frac{d}{dx}\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$
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